Self-assembly of amphiphilic conjugated diblock copolymers into one-dimensional nanoribbons

Amanda C. Kamps, Ma Helen M. Cativo, Michael Fryd, So Jung Park

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


The colloidal self-assembly of a new conjugated diblock copolymer of a polythiophene derivative, poly[3-(2,5,8,11-tetraoxatridecanyl)thiophene]-block- poly(ethylene glycol) (PTOTT-b-PEG), led to various well-defined assembly structures such as vesicles, sheets, and nanoribbons. A unique and technologically relevant nanoribbon structure with a dimension reaching tens of micrometers was formed in water when polar protic solvents were used as initial cosolvents. Self-assembly of PTOTT-b-PEG in various solvent compositions and polymer concentrations indicated that the hydrogen bonding between the diblock copolymer and the self-assembly medium plays an important role in determining the self-assembly structure and that the final assembly structure should be the result of a delicate interplay between hydrogen bonding and π-π interactions. This study demonstrates that the addition of hydrogen bonding capability and amphiphilicity in the self-assembly of conjugated polymers can lead to many interesting well-defined assembly structures that are not typically found in conjugated polymers.

Original languageEnglish
Pages (from-to)161-164
Number of pages4
Issue number1
StatePublished - 14 Jan 2014


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